Shareholders' Equity - Changes in Shareholders' Equity (Details) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Changes in shareholders' equity that are attributable to the Company's shareholders and to non controlling interests
Beginning Balance	$ 975,016	$ 912,082
Stock-based compensation expense	6,313	7,402
Dividends paid		(30,486)
Other adjustment to paid-in capital		153
Purchase of treasury shares		(153)
Shares withheld for net settlements of share - based awards	(1,285)	(1,901)
Issuance of common stock - ESPP	43	116
Net income (loss)	38,179	50,483
Other comprehensive income (loss)	2,569	2,477
Ending Balance	1,020,835	940,173
Common shares
Changes in shareholders' equity that are attributable to the Company's shareholders and to non controlling interests
Beginning Balance	$ 1,273	$ 1,262
Beginning Balance (shares)	122,472	121,318
Restricted stock granted	$ 18	$ 12
Restricted stock granted (shares)	1,784	1,248
Restricted stock canceled (shares)	(26)	(18)
Purchase of treasury shares (in shares)		(17)
Shares withheld for net settlements of share - based awards	$ (2)	$ (2)
Shares withheld for net settlements of share-based awards (shares)	(226)	(243)
Issuance of common stock - ESPP (shares)	7	15
Ending Balance	$ 1,289	$ 1,272
Ending Balance (shares)	124,011	122,303
Additional Paid-In Capital
Changes in shareholders' equity that are attributable to the Company's shareholders and to non controlling interests
Beginning Balance	$ 1,276,213	$ 1,262,267
Stock-based compensation expense	6,313	7,402
Restricted stock granted	(18)	(12)
Other adjustment to paid-in capital		153
Shares withheld for net settlements of share - based awards	(1,283)	(1,899)
Issuance of common stock - ESPP	43	116
Ending Balance	1,281,268	1,268,027
Distributions in Excess of Earnings
Changes in shareholders' equity that are attributable to the Company's shareholders and to non controlling interests
Beginning Balance	(175,960)	(222,892)
Dividends paid		(30,486)
Net income (loss)	38,219	50,544
Ending Balance	(137,741)	(202,834)
Accumulated Other Comprehensive Loss
Changes in shareholders' equity that are attributable to the Company's shareholders and to non controlling interests
Beginning Balance	(20,216)	(22,589)
Other comprehensive income (loss)	2,584	2,479
Ending Balance	(17,632)	(20,110)
Treasury shares
Changes in shareholders' equity that are attributable to the Company's shareholders and to non controlling interests
Beginning Balance	$ (105,099)	$ (104,946)
Beginning Balance (shares)	4,852	4,835
Purchase of treasury shares		$ (153)
Purchase of treasury shares (in shares)		17
Ending Balance	$ (105,099)	$ (105,099)
Ending Balance (shares)	4,852	4,852
Noncontrolling Interests
Changes in shareholders' equity that are attributable to the Company's shareholders and to non controlling interests
Beginning Balance	$ (1,195)	$ (1,020)
Net income (loss)	(40)	(61)
Other comprehensive income (loss)	(15)	(2)
Ending Balance	$ (1,250)	$ (1,083)